Bath tub



FIG. 1 is a front elevation view of a first embodiment of a bath tub, ofthe present design;

FIG. 2 is a rear, top perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front, top perspective view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a right, top perspective view of a second embodiment of a bathtub, of the present design;

FIG. 8 is a left, top perspective view thereof;

FIG. 9 is a left side elevation view thereof;

FIG. 10 is a front, elevation view thereof;

FIG. 11 is a rear elevation view thereof; and,

FIG. 12 is a top plan view thereof.

CLAIM We claim the ornamental design for a bath tub, as shown and described. 